Compile the source code by using this code in the terminal:
and be notified that madwifi is the directory of the downloaded drivers.

Code:

cd madwifi
make
sudo make install

this will place the drivers in : /lib/modules/2.6[version]mdkcustom/net . the files need to be moved to /lib/modules/2.6[your kernel version]mdk/ ,for example, the kernel version of the Mandriva where this process was tested is 2.6.11-6smpmdk so it would be: